   Chapter 18, Problem 2P

Chapter
Section
Textbook Problem

(a) Find the current in an 8.00-Ω resistor connected to a battery that has an internal resistance of 0.15 Ω if the voltage across the battery (the terminal voltage) is 9.00 V. (b) What is the emf of the battery?

(a)

To determine
The current produced by the battery.

Explanation

Given Info: The resistor is 8.00Ω and the voltage across the battery is 9.00V .

Explanation:

Formula to calculate the current through both the resistor and the battery by using ohm’s law is,

I=ΔVR

• I is the current,
• ΔV is the potential difference of the battery,
• R is the resistor,

Substitute 8.00Ω for R and 9.00V for ΔV to find I

(b)

To determine
The emf of the battery.

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